Which factor is crucial for a successful eyelash extension application?

Proper isolation of natural lashes is crucial for a successful eyelash extension application because it ensures that each extension is attached to a single natural lash. This technique prevents the extensions from sticking together and reduces the risk of damaging the natural lashes. When isolation is correctly performed, it allows for a more uniform and aesthetically pleasing result while promoting the health of the natural lashes.

If natural lashes are not properly isolated, multiple lashes may be glued together, leading to clumping and discomfort. Additionally, poor isolation can cause stress on the natural lashes, potentially leading to breakage or traction alopecia. Therefore, mastering the skill of isolation is essential for both the safety and longevity of the eyelash extensions.